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GEORGE IV. HAYS AND GEORGE E. SANDERSON, OF AUBURN, NEBRASKA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 553,808, dated January28, 1896.

Application filed September 5, 1895. Serial No. 561,509. (No model.)

To all whom it may concern:

Be it known that we, GEORGE IV. HAYS and GEORGE E. SANDERSON, citizensof the United States of America, residing at Auburn, in the county ofNemaha and State of Nebraska, have invented certain new and usefulImprovements in Pumps; and we do hereby declare the following to be afull, clear, and exact description of our invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawing, and to letters ofreference marked thereon, which forms a part of this specification.

The object of this invention is to provide a pump of improvedconstruction, whereby at each upstroke of the piston'rod air will beforced to the bottom of the water-chamber and assist in forcing thewater out of the dischargespout as well as aerate the same; and withthese ends in View the invention consists in the construction andcombination of the parts, as will be hereinafter fully set forth, andparticularly pointed out in the claims.

In the accompanying drawing, forming part of this specification, thefigure is a side elevation, broken away at intervals to better show theinterior construction.

A designates the pump stock or cylinder through which the upper end ofthe piston rod passes, and this cylinder is supported so as to extend asuitable distance above the platform aby means of a casting a, saidcasting being provided with an extension through which the dischargepipeM of the pump passes. The upper end of the cylinder A has securedthereto a head or cap a constructed to provide guides for the piston-rodE and pump-handle A, the pump-handle being connected at its inner end tothe piston-rod and fulcrumed upon a. vertical bar a secured at its lowerend to the casting a and braced by a fixture a projecting from anintermediate portion of the cylinder A. The upper end of the piston-rodextends above the head or cap a and may be provided'with any suitablemeans for connecting the same to the operating-rod of a windmill.

To the lower end of the cylinder A is coupled an air-chamber B which isconnected with an air-inlet pipe 0 provided with a checkwalve O. Thisair-inlet pipe is located beneath the platform a, and the check-valvetherein permits the air to enter the chamber 13 and prevents itsbackward flow. Through the air-chamber B the piston-rod E passes, andthis piston-rod is hollow and is provided within the chamber B with acoupling G having a check-valve g, the piston-rodbeingprovided withholes or inlet-apertures 6 above the coupling G. Upon the piston-rodbelow the coupling G and within the cylinder or chamber B is secured apiston D having the usual packing-rings d and d.

F designates the upper part of the watercylinder which is coupled to thelower end of the air-chamber B and is provided with an exit-pipe Lcoupled to the discharge-pipe M. The exit-pipe L may be provided with ashort section Z, to which a pipe for carrying the water to a distancemay be attached, and when this is provided the upper end of thedischarge-pipe M has a cut-offvalve a I designates the lower part of thewatercylinder in which the piston H moves, said piston being attached tothe lower end of the hollowpiston-rod E. The lower end of the part I ofthe water-cylinder is provided with an ordinary valve J, through whichthe water passes from the well into the water-cylinder. The frame of thepiston H is provided with a series of holes h which communicate with theopen lower end of the piston-rod, and said piston is also provided withan ordinary valve.

In operation when the piston-rod E is on its downward movement the valveJ is closed and the water contained in the cylinder I is forced abovethe piston H, and at the same time the piston D draws a quantity of airinto the chamber B through the inlet-pipe O, and also forces the waterwhich has collected below the piston out through the dischc rgepipe. Nowupon the upstroke of the pistonrod the piston II forces the water out ofthe .discharge-pipe, and at the same time the piston D forces the aircontained in the chamber B into the hollow piston-rod and out of thelower end thereof, so that it will not only assist in discharging thewater but also aerate the same, the check-valve in the coupling Gpreventing suction in the hollow piston-rod when the piston D descends.

IOO

llavin g thus described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. In a pump, the combination, of a pump stock or cylinder A suitablysupported and provided at its lower end with an air-inlet valve; anair-chamber B connected to the lower end of the cylinder A andcommunicatinwith the inlet-valve, and awater-cylinder coupled to thelower end of the air-chamber; together with a hollow piston-rod E havingpistons located in the air and water chambers and provided with acheck-valve, the hollow piston-rod opening at its lower end into thewater chamber or cylinder and having holes or apertures e whichcommunicate with the air-chamber, substantially as shown and for thepurpose set forth.

2. The combination in a pump, of a cylinder A suitably supported; aninlet-pipe 0 connected to the lower end of the cylinder and providedwith a check-valve; an air-chamber B coupled to the cylinder andcommunicating with the inlet-pipe, and a water chamber or cylindercoupled to the air-chamber, the water-cl1a1nber having a valve at itslower end; together with a hollow piston-rod E having pistons operatingin the air and water chambers, and a coupling G connected to thepiston-rod within the air-chamber; the hollow piston-rod opening intothe lower end of the water-chamber through holes in the frame of thepiston therein and provided with holes c communicating with theair-chamber, substantially as shown and for the purpose set forth.

V. HAYS.

E. SANDERSON.

arEORGE GEORGE In presence of- \V. P. FREEMAN, \V. II. KELLIGAR.

